Popularized mostly by 50s Rockabillys, a quiff is basically a forelock that is longer than the rest of one's hair on top, and is usually combed upwards (and back), or to the side, or made to hang over the forehead.
Depending on the wearers hair type a spot of gel or grease may be in order. Very stylish & manly. If done properly.

The quiff is often worn as a variation or 'evolution' on the very simple (and very manly) crew cut, or with the (longer & back-combed) 'duck's arse' or DA hairstyle.

Called a 'banane' in French, for obvious reasons.

A few Famous Quiffs:

Elvis Presley

Travolta in 'Grease'

Morrissey

Chris Isaak

There's lots more, but has anyone seen the massive quiffs on those Japanese high-school rebel kids (often the heroes of 'shonen manga' (Japanese comics for boys))?? They kick ass!

A Quiff is a queef by quoaf. A Quiff is the rarest form of flatulence. A quiff occurs when a penis is inserted into a vagina and the penis emits a quoaf (air or gas escaping from the penis through the urethra) thus causing the vagina to fill up with air and causing it to queef (an expulsion of wind from the vulva during coitus; a vaginal fart). Very few people have experienced this rare phenomenon.

Winning the lottery is like making a Quiff, its next to impossible to do!